Shower enclosure and base



FIG. 1 is a perspective view of a shower enclosure and base showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side view thereof; and,

FIG. 4 is a top plan view of the base thereof.

The broken lines showing of a plumbing drain and shower door and handle are for illustration purposes only and form no part of the claimed design. 

An ornamental design for a shower enclosure and base, as shown and described. 